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棉织物超级柔软整理工艺方法的研究

染整技术 2004年第4期26卷 15-18页

作者：吴赞敏王海英戴晓红天津工业大学材料化工学院天津300160

采用生物化学法对棉织物进行了超柔软整理,并对整理工艺方法进行了优化研究。研究结果表明:超级柔软整理后棉织物的各项性能和手感均得到改善和提高,其中以纤维素酶+非离子柔软剂“氨基硅油8040”效果更好。由于染色后织物上染料对酶有... 详细信息

采用生物化学法对棉织物进行了超柔软整理,并对整理工艺方法进行了优化研究。研究结果表明:超级柔软整理后棉织物的各项性能和手感均得到改善和提高,其中以纤维素酶+非离子柔软剂“氨基硅油8040”效果更好。由于染色后织物上染料对酶有抑制作用(直接染料更明显),酶处理在染色前进行,效果更好。

关键词：棉织物手感超柔软整理

The Need and Its Influence Factors for Community-based Rehabilitation Services for Disabled Persons in One District in Beijing

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Biomedical and Environmental Sciences 2006年第6期19卷 495-497页

作者： hong dai HUI XUE ZONG-JIE YIN AND Zhong-XIN xiao School of Public Health and Family Medicine Capital Medical University You An Men Beijing 100069 China National Medical Examination Center The Ministry of Public Health Xi Zhi Men Beijing 100044 China

Purpose To explore the needs for basic community-based rehabilitation services for disabled persons in Xuanwu District, Beijing, China, and to identify factors which influence disabled persons to accept rehabilitation services. Method One hundred and eight disabled persons were selected by systematic sampling and simple random sampling to assess their needs for community-based rehabilitation services. Results Of the interviewees, 57A% needed the community-based rehabilitation services, but only 13.9% took advantage of it. The main factors influencing the interviewees to accept these services were cost （P〈0.05）, knowledge about rehabilitation medicine （P〈0.05）; and the belief in the therapeutic benefit of the community-based rehabilitation service （P〈0.05）. Conclusion A considerable gap exists between the supply of community-based rehabilitation services in Beijing and the needs for these services by disabled residents underscoring the need for improved availability, and for additional research.

关键词： Disabled Rehabilitation services Influence factors Functional Independence Measure (FIM)

Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis

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Neural Regeneration Research 2025年第2期20卷 518-532页

作者： Conglin Wang Fangyuan Cheng Zhaoli Han Bo Yan Pan Liao Zhenyu Yin Xintong Ge dai Li Rongrong Zhong Qiang Liu Fanglian Chen Ping Lei Department of Geriatrics Tianjin Medical University General HospitalTianjinChina School of Medicine Nankai UniversityTianjinChina Tianjin Neurological Institute TianjinChina

Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor ***-induced pluripotent stem cell-derived neural stem cell exosomes(hiPSC-NSC-Exos)have shown potential for brain injury repair in central nervous system *** this study,we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying *** results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits,enhanced blood-brain barrier integrity,and reduced leukocyte infiltration in a mouse model of intracerebral ***,hiPSC-NSC-Exos decreased immune cell infiltration,activated astrocytes,and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1,macrophage inflammatory protein-1α,and tumor necrosis factor-αpost-intracerebral hemorrhage,thereby improving the inflammatory *** sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion,thereby improving blood-brain barrier *** with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these *** summary,our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity,in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.

关键词： AKT astrocyte blood-brain barrier cerebral edema exosomes human-induced pluripotent stem cells intracerebral hemorrhage neural stem cells neuroinflammation PI3K

Early identification of stroke through deep learning with multi-modal human speech and movement data

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Neural Regeneration Research 2025年第1期20卷 234-241页

作者： Zijun Ou Haitao Wang Bin Zhang Haobang Liang Bei Hu Longlong Ren Yanjuan Liu Yuhu Zhang Chengbo dai Hejun Wu Weifeng Li Xin Li School of Computer Science and Engineering Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Guangdong Neuroscience InstituteGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Emergency Medicine Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong ProvinceChina

Early identification and treatment of stroke can greatly improve patient outcomes and quality of *** clinical tests such as the Cincinnati Pre-hospital Stroke Scale(CPSS)and the Face Arm Speech Test(FAST)are commonly used for stroke screening,accurate administration is dependent on specialized *** this study,we proposed a novel multimodal deep learning approach,based on the FAST,for assessing suspected stroke patients exhibiting symptoms such as limb weakness,facial paresis,and speech disorders in acute *** collected a dataset comprising videos and audio recordings of emergency room patients performing designated limb movements,facial expressions,and speech tests based on the *** compared the constructed deep learning model,which was designed to process multi-modal datasets,with six prior models that achieved good action classification performance,including the I3D,SlowFast,X3D,TPN,TimeSformer,and *** found that the findings of our deep learning model had a higher clinical value compared with the other ***,the multi-modal model outperformed its single-module variants,highlighting the benefit of utilizing multiple types of patient data,such as action videos and speech *** results indicate that a multi-modal deep learning model combined with the FAST could greatly improve the accuracy and sensitivity of early stroke identification of stroke,thus providing a practical and powerful tool for assessing stroke patients in an emergency clinical setting.

关键词： artificial intelligence deep learning diagnosis early detection FAST screening stroke

Air target recognition method against ISRJ for radio frequency proximity sensors using chaotic stream encryption

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Defence Technology（防务技术） 2023年第10期28卷 267-279页

作者： Jian-feng Li Jian dai Xin-hong Hao xiao-peng Yan Xin-wei Wang Science and Technology on Electromechanical Dynamic Control Laboratory School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing100081China BIT Tangshan Research Institute Beijing100081China

The interrupted-sampling repeater jamming(ISRJ)can cause false targets to the radio-frequency proximity sensors(RFPSs),resulting in a serious decline in the target detection capability of the *** article proposes a recognition method for RFPSs to identify the false targets caused by *** proposed method is realized by assigning a unique identity(ID)to each RFPS,and each ID is a periodically and chaotically encrypted in every pulse *** processing technique of the received signal is divided into ranging and ID *** the ranging part,a high-resolution range profile(HRRP)can be obtained by performing pulse compression with the binary chaotic *** suppress the noise,the singular value decomposition(SVD)is applied in the *** ID decryption,targets and ISRJ can be recognized through the encryption and decryption processes,which are controlled by random *** adaptability analysis conducted in terms of the peak-to-side lobe ratio(PSLR)and bit error rate(BER)indicates that the proposed method performs well within a 70-k Hz Doppler shift.A simulation and experimental results show that the proposed method achieves extremely stable target and ISRJ recognition accuracies at different signal-to-noise ratios(SNRs)and jamming-to-signal ratios(JSRs).

关键词： Interrupted-sampling repeater jamming(ISRJ) Radio frequency proximity sensors(RFPS) Chaotic stream encryption Air target recognition Identity(ID)decryption

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内冲击激发式安全雷管的研制与适配性测试

火工品 2025年第1期 1-6页

作者：邓小娟代鹏举董金龙刘晓娟王爱上海鲲程电子科技有限公司上海201100 广东宏大民爆集团有限公司广东广州510000 湖南湘科控股集团有限公司湖南长沙410000 江西新余国泰特种化工有限责任公司江西新余338000 湖南神斧集团湘南爆破器材有限责任公司湖南永州425000

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的... 详细信息

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的起爆和传爆过程;通过与不同点火药的适配测试,以及对起爆能力、延期精度等关键功能的全面评估,验证了IID雷管在与LTNR和K-K等药剂适配时,各项性能均满足行业标准。此外,IID雷管结构工艺简单、安全环保,具有广泛的应用前景。

关键词：安全雷管数码电子雷管内冲击激发无起爆药雷管激发组件

Surface-confined persistent luminescence with amplified FRET efficiency for cell-cell communication monitoring

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Science China Chemistry 2025年

作者： Ziyun Miao Wenjing dai Yubin Jin Bing Qi Jiayi Chen Lingling Qiu Yurong Wei Jie Wang The Key Lab of Health Chemistry&Molecular Diagnosis of Suzhou College of ChemistryChemical Engineering&Materials ScienceSoochow University

Microbial communication monitoring is vital for understanding the mechanisms beneath gut microbiota equilibrium, infections,and biomanufacturing. Herein, we reported monitoring bacterial communication by surface-confined persistent ***, we constructed core-shell structured Zn1.4Ga1.2Ge0.4O4@Zn1.4Ga1.2Ge0.4O4:Cr（ZGGO@ZGGO:Cr） persistent luminescence nanoparticles（PLNPs） with amplified FRET efficiency for the detection of azoreductase（AzoR） that participates in bacterial communication. ZGGO@ZGGO:Cr nanoparticles were functionalized with an azo black hole quencher（ZGGO@ZGGO:Cr-BHQ-3）. Due to the proximity of surface-confined persistent luminescence with the surface-bound BHQ-3,ZGGO@ZGGO:Cr-BHQ-3 exhibited a FRET efficiency up to 1.6 times that of traditional ZGGO:Cr-BHQ-3. Further, the specific catalytic reduction of azo bonds in BHQ-3 by bacterial extracellular AzoR recovers the persistent luminescence of ZGGO@ZGGO:Cr. ZGGO@ZGGO:Cr-BHQ-3 displayed superior sensitivity and speed in detecting extracellular AzoR over ZGGO:Cr-BHQ-3, attributed to its surface-confined persistent luminescence. We found that the peak secretion of AzoR occurs during the exponential growth period of bacteria including S. aureus and E. coli based on the persistent luminescence recovery rate of ZGGO@ZGGO:Cr-BHQ-3. Furthermore, ZGGO@ZGGO:Cr-BHQ-3 was used to probe the communication between different bacterial species. R. palustris is a kind of lycopene-production bacteria. We found that the cohabitation of R. palustris and S. putrefaciens boosted both AzoR secretion and lycopene production. Moreover, the secretion and activity of AzoR positively correlated with lycopene production, suggesting that AzoR may participate in the communication between R. palustris and S. putrefaciens to promote lycopene production. This study offers a robust method to enhance PLNP-based biosensing sensitivity and provides a promising strategy for microbial communication monitoring.

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Microstructure and mechanical properties of two-stage aged Al-Cu-Mg-Ag-Sm alloy

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Rare Metals 2019年第1期38卷 42-51页

作者： Wen-Long Zhang dai-hong xiao Ting Li Jian-Di Du Dong-Yan Ding State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Science and Technology on High Strength Structural Materials Laboratory Central South University

High-strength Al-Cu-Mg-Ag-Sm alloy was fabricated and subjected to single-stage aging and pre-aging(two-stage aging). Effect of pre-aging on micros tructure and mechanical properties of the alloy was investigated. It is found that the alloy is mainly composed of α-Al, Al_2Cu, Al_2CuMg and AlCu_4Sm. The number of plate-like Ω Al_2Cu precipitates is comparable to that of rod-like S Al_2 CuMg precipitates in the single-stage aged alloy, whereas, in the two-stage aged alloy, it is much higher than that of S precipitates. Q precipitates have a smaller plate thickness and distribute more uniformly in the two-stage aged alloy than in the single-stage aged *** tensile strength(UTS) and yield strength of the two-stage aged alloy are 12% higher than those of the single-stage aged one, indicating a better aging hardening caused by the two-stage aging. The increased tensile properties mainly come from both stronger precipitation strengthening caused by more Ω precipitates in the twostage aged alloy and stronger solution strengthening from Mg atoms. The fracture surfaces consist of both dimple zones composed of microscale dimples and platform zones composed of nanoscale dimples. The total area of dimple zones for single-stage aged alloy is much higher than that for two-stage aged alloy, which can be attributed to different numbers of Ω precipitates in the two alloys.

关键词： Rare earth aluminum alloy: Aging behavior Tensile property Fractography

A Simplified Method for Estimating the Initial Stiffness of Monopile-Soil Interaction Under Lateral Loads in Offshore Wind Turbine Systems

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China Ocean Engineering 2023年第1期37卷 165-174页

作者： LI xiao-juan dai Guo-liang ZHU Ming-xing WANG Li-yan LIU hong-yuan School of Civil Engineering and Architecture Jiangsu University of Science and TechnologyZhenjiang 212003China School of Civil Engineering Southeast UniversityNanjing 210096China Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education Southeast UniversityNanjing 211189China

The interface mechanical behavior of a monopile is an important component of the overall offshore wind turbine structure *** the soil-structure interaction,particularly the initial soil-structure stiffness,has a significant impact on the study of natural frequency and dynamic response of the *** this paper,a simplified method for estimating the interface mechanical behavior of monopiles under initial lateral loads is *** on the principle of minimum potential energy and virtual work theory,the functions of soil reaction components at the interface of monopiles are derived;MATLAB programming has been used to simplify the functions of the initial stiffness by fitting a large number of examples;then the functions are validated against the field test data and FDM *** method can modify the modulus of the subgrade reaction in the p-y curve method for the monopile-supported offshore wind turbine system.

关键词： theoretical analysis pile−soil interaction interface mechanical behavior offshore wind turbine systems